20512135

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{2887}}^1$

素因数の和:2935

約数の個数: 24

約数和(自身を含む): 29630880

約数和(自身を除く): 9118745

約数列:

[1, 5, 7, 29, 35, 49, 145, 203, 245, 1015, 1421, 2887, 7105, 14435, 20209, 83723, 101045, 141463, 418615, 586061, 707315, 2930305, 4102427, 20512135]

約数ペア:

[(1, 20512135), (5, 4102427), (7, 2930305), (29, 707315), (35, 586061), (49, 418615), (145, 141463), (203, 101045), (245, 83723), (1015, 20209), (1421, 14435), (2887, 7105)]